How do I fix this ugly bevel?
Just use a cube and scale it up to the size of the cup on the Y and X axis. Make sure the cube intersects the cup from above just till you can't see the bevels anymore. Select the cup, add a boolean modifier, set it to &quot;difference&quot; and for &quot;object&quot;, use the cube that you have made. Apply the modifier, delete the cube and your bevels are gone! You will maybe have some lag while using smooth shading...